Hi Joel,

thanks for the answer. I guess this is not a race condition. What I want to 
achieve
is to edit cells as in a spreadsheet. That means

A single click starts the editing mode

With gtktreeview I need a first click to select the cell and a second click to 
start editing. Do you
maybe imagine a way how the editing could be started with a single click? The 
code is here:

http://git.savannah.gnu.org/cgit/pspp.git/tree/src/ui/gui/psppire-var-sheet.c?h=treeview

Friedrich


Am 11.12.2015 um 18:26 schrieb Joël Krähemann <weedli...@gmail.com>:

> Hi Friedrich, try to stay on objectives. Do you use an IPC mechanism,
> or is it a separate thread?
> A callback is called by g_main_context_iteration() of gtk_main() it's
> polled some how.
> More code would be great and better information about it.
> 
> If it's a multi-threaded issue you might want to take a look at GMutex
> and GCond.
> With g_mutex_lock() and g_mutex_unlock() you're normally well served.
> 
> Bests,
> Joël Krähemann
> 
>> 





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